Sulcus (morphology)
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In
gums, where they fold around the neck
of the tooth.
In invertebrate zoology, a sulcus is a fold, groove, or boundary, especially at the edges of sclerites or between segments.
In
sulcate
.
Examples in anatomy
Liver
- Ligamentum teres hepatisfissure
- Ligamentum venosum fissure
- Portal fissure, found in the under-surface of the liver
- Transverse fissure of liver, found in the lower surface of the liver
- Umbilical fissure, found in front of the liver
Lung
- Azygos fissure, of right lung
- Horizontal fissure of right lung
- Oblique fissure, of the right and left lungs
Skull
- Auricular fissure, found in the temporal bone
- Petrotympanic fissure
- Pterygomaxillary fissure
- Sphenoidal fissure, separates the wings and the body of the sphenoid bone
- Superior orbital fissure
Other types
- anal fissure, a break or tear in the skin of the anal canal
- anterior interventricular sulcus
- calcaneal sulcus
- coronal sulcus
- femoral sulcus or intercondylar fossa of femur
- fissure (dentistry), a break in the tooth enamel
- fissure of the nipple, a condition that results from running, breastfeeding and other friction-causing exposures
- fissured tongue, a condition characterized by deep grooves (fissures) in the tongue
- gingival sulcus
- gluteal sulcus
- Henle's fissure, a fissure in the connective tissue between the muscle fibers of the heart
- interlabial sulci
- intermammary sulcus
- intertubercular sulcus, the groove between the lesser and greater tubercules of the humerus (bone of the upper arm)
- lacrimal sulcus(sulcus lacrimalis)
- malleolar sulcus
- palpebral fissure, separates the upper and lower eyelids
- patellar sulcus or intercondylar fossa of femur
- posterior interventricular sulcus
- preauricular sulcus
- musculospiral groove)
- sagittal sulcus
- brow ridgesof some primates)
- sigmoid sulcus
- skin fissure, a linear-like cleavage of skin, sometimes defined as extending into the dermis
- sulcus arteriæ vertebralis
- sulcus subtarsalis in the eyelid
- sulcus tubae auditivae
- tympanic sulcus[1]
- urethral sulcus[2]
- ventral median fissure, of the spinal cord
In neuroanatomy
Brain
- Broca's fissure: found in the third left frontal fold of the brain.
- Burdach's fissure: connects the brain's insula and the inner surface of the operculum.
- cerebrumto the occipital fissure.
- Callosomarginal fissure: found in the medial surface of the cerebrum.
- Central sulcus or Rolando's fissure: separates the brain's frontal and parietal lobes.
- Clevenger's fissure: found in the inferior temporal lobe of the brain
- Collateral fissure: found in the inferior surface of the cerebrum.
- Fissure of Bichat: found below the corpus callosum in the cerebellum of the brain.
- Lateral sulcus or Fissure of Sylvius: separates the frontal and parietal lobes of the brain from the temporal lobe.
- Hippocampal sulcus: a sulcus that extends from the brain's corpus callosum to the tip of the temporal lobe.
- Horizontal fissure or Transverse fissure: found between the cerebrum and the cerebellum. Note that a "transverse fissure" can also be found in the liver and lungs.
- Longitudinal fissure or Medial longitudinal fissure: which divides the cerebrum into the two hemispheres.
- Occipitoparietal fissure: found between the occipital and parietal lobes of the brain.
- Wernicke's fissure: separates the brain's temporal and parietal lobes from the occipital lobe.
- Zygal fissure: found in the cerebrum.
In the
fissure such as the longitudinal fissure that separates the two hemispheres
.
See also
References
- ^ "Tympanic sulcus". The Free Dictionary. Retrieved 2021-05-19.
- ^ Larkins, Christine E., and Martin J. Cohn. "Phallus development in the turtle Trachemys scripta." Sexual Development 9.1 (2015): 34-42.